The complaint filed in federal court in Minnesota says LMP is violating Minnesota's Deceptive Trade Practices Act. My Pillow also accuses LMP of breaking the terms of a settlement agreement reached between the companies in a 2012 lawsuit.

The new suit seeks unspecified damages. It also asks a judge to order "the surrender and destruction" of IMP products that may violate trademark rules.

LMP Worldwide did not immediately respond to an email request for comment.